Let us learn then what are the things that defile the man; let us learn, and let us flee them. For even in the church we see such a custom prevailing amongst the generality, and men giving diligence to come in clean garments, and to have their hands washed; but how to present a clean soul to God, they make no account.
And this I say, not forbidding them to wash hands or mouth; but willing men so to wash as is meet, not with water only, but instead of water, with all virtues. For the filth of the mouth is evil speaking, blasphemy, reviling, angry words, filthy talking, laughter, jesting: if then thou art conscious to thyself of uttering none of them, neither of being defiled with this filth, draw near with confidence; but if thou hast times out of number received these stains, why dost thou labor in vain, washing thy tongue indeed with water, but bearing about on it such deadly and hurtful filth? For tell me, hadst thou dung on thy hands, and mire, wouldest thou indeed venture to pray? By no means. And yet this were no hurt; but that is ruin. How then art thou reverential in the different things, but in the forbidden remiss? St. John Chrysostom